Boyd, William Sinclair (of Sinclair & Boyd), Ravenscroft House, Bloomfield is listed in the Belfast And Province Of Ulster Directory 1884.
It is likely Ravenscroft Avenue and Ravenscroft Street take their names from this house.
"Resolved - That the name Ravenscroft Gardens be approved for a new street on ground off Bloomfield Road, the property of Mr. R. S. Boyd". (13th February 1934).