Ooo now I dont know how many Wilson families were Romany but I do know of two marriages that were.
Brittania "Annie" Boss married William Wilson, (never found a trace of them on census) according to the Heron Pedigree
Her sister Delilah/Deliah/Delaila Wilhelmina Boss married his brother George Wilson.
They were daughters of Riley Boss aka James Vanis or James Heron (his original name was James Heron) by his 3rd wife Susan aka Shurensi "Yoki Shuri" Smith. These were the names they went by according to the Heron Pedigree, but Riley Boss also used the alias William Boss - as found on the births of two children - one of them being Brittania.
Delaila was born circa 1830 Hull, according to the census's and Brittanias baptism I found via the IGI 5.11.1825, at Grasby Lin.
As far as I know William Wilson and Brittania had no children, but Delaila and George certainly did:
Lavinia b.cir 1851 Hull, married Henry Scott
Annie or Ann b.cir 1852 Hull married William Hart
Susan b.cir 1854 Hull, died young
William b.cir 1858 Hull married Lucy Coopland
Jack/John b.cir 1864 Hull was a champion boxer of Ykshire
Alice b.cir 1857 Hull married James Wright
Arthur Adness b.cir 1868 Hull married Ada Iveson/or Shinn
Sally b.cir 1856 Hull
George A b.cir 1870 Hull
I know some of the lineage of Arthur Adness Boss and Ada.
and some of William Boss and Lucy.
Going further back is harder to corrobrate - Riley Boss reputedly died in 1850 in London, having moved to the area known as "The Potteries" - he cut his hand skinning a rabbit, and died of blood poisoning (according to legend) and was buried in Brompton Churchyard.
Shurensi/Susan Boss b.cir 1800 died 18.01.1868 buried Spring Bank Cem, Yks
For a fair bit more on this family, and to see the BOSS and Heron Pedigrees as far as I have been able to corroborate them against known facts please check my website(not blowing my own trumpet just its a lot to write out and Ive already written it there -
http://www.geocities.com/seraphim_angel_2002/Gypsyindex.htmlHappy hunting!!