Conrad's wife and children return to The Netherlands by March 1870 to live in Amsterdam until about the beginning of 1872 when they move into the huge (rented) estate of Huis Den Bosch near Brummen in The Netherlands (near Zutphen).
On May 5th, 1874 he buys, from Mr Zegers Veeckens who build it around 1865 and passed away, a stately home in Zutphen called Huize Schoonzigt.
On June 13th, 1875 his wife, Anna Johanna Gerarda Versteeg, dies, age 34, 11 days after giving birth to a stillborn child at Huize Schoonzigt in Zutphen. This was her 10th child; 4 of which died within 1 day after birth!!
On January 4th, 1876 Conrad (age 43) gets married to Elisabeth Theodora Anna Mahler (age 25 - born in Zutphen on March 5th, 1850) with whom he has another 5 children; the first of which died 7 months old and the very last (Frederic Antoine Marie Cavadino - born in The Hague on September 9th, 1892) is the grandfather of FH Cavadino of Cavadino & Co Limited in Hong Kong.
He came back already wealthy from Batavia but increased his fortune to the point where from 1895 to well past 1906 he was one of about 700 persons mentioned each year in the province of South-Holland, paying the highest taxes (having the highest income) from a population of around 1,150,000 people. He was said to own "many tons of Guilders" and 14 high-end properties at some point. That would make him in current Euro-terms a serious multi-millionaire and clearly a very successful businessman.
In 1920, suffering from dementia, he and his wife move to Villa De Raaphorst in Arnhem, The Netherlands; a care home run by nuns. On December 19th, 1920 at the respectable age of 88, Conrad passes away; only 11 days after the death of his second wife Elisabeth (70 years old). Both are buried in The Hague, The Netherlands.
A few activities that have been traced are:
While living in The Netherlands he seems to have been actively investing in properties and businesses.
He seemed to have been lending money in the shape of mortgages while at the same time borrowing for investment in the shape of debentures (bonds).
At some point he invests in a large flour grinding steam mill with bread baking ovens in Wetter am Ruhr in Germany with his youngest brother Victor Anton living in Neuss (Germany) as the prospective partner. to run it. This is however put up for sale in July 1872 due to the death of Victor at the age of 29 and the continuing illness of his eldest brother Anton Victor; who is corn master-miller, living in Wetter am Ruhr. Their father Josephus was also a corn master-miller and moved to Germany in 1851 with his wife and 5 children -except for CAW who was learning the confectionery/bakery trade in Amsterdam at that time and son Reinirus Bernardus who was a "zouave" (=volunteer in the defensive army of the Vatican).June 1876 he goes into partnership with wine-merchant Willem Everhard Ketjen, trading as wine and drinks business Ketjen & Cavadino in Zutphen, The Netherlands. Per January 1st, 1890 he transfers his partnership share to his eldest son Anton Gerard Theodore (possibly a birthday present as he turned 23 on January the 21st).
January 1888 he buys at auction Hotel Ernst ("a rundown, filthy hotel of ill repute....."), located at Molenvliet in Noordwijk in Batavia (Indonesia) valued at f36,000 for only 13,000 Guilders. Initially planning to renovate and open the hotel himself, he sells it again at auction in February 1891 for 15,700 Guilders to Mr Wisse who opens it as Hotel Wisse after extensive renovations in December 1891.