From the above, it looks like Henery is a relative of Sybil's, but I don't know any more than that.
Additional genealogical info:
Richard's WWII draft registration card from 1 Jul. 1941 has the following:
Richard Samuel Wilson
3519 N. Malta St., Philadelphia, PA
no telephone
b. 28 Jun. 1920 in Philadelphia, PA
occupation: steamfitter's apprentice
Person who will always know his address: John Wilson, 3519 N. Malta St., Philadelphia, PA
Employer: Penn Plumbing and Heating, 415 S. 22nd St., Philadelphia, PA
White, 5'7" tall, 157 lbs., blue eyes, brown hair, light complexion
This appears to be his Army enlistment record -
https://www.familysearch.org/ark:/61903/1:1:KMJ2-7LGPennsylvania Veteran's compensation application from 1950 has him living at 4620 Lansing St., Philadelphia and his parents living at 3519 N. Malta St. He was in foreign service from 26 Sep. 1942 to 13 Sep. 1945 and domestic services from 7 Dec. 1941 to 26 Sep. 1942 & 13 Sep. 1945 to 20 Sep. 1945.
This is him & his family on the 1950 census -
https://www.familysearch.org/ark:/61903/1:1:6X19-HBSQ