Claude shows as married on that 1920 passenger list and it names his wife Florence Lee living at 6 Edenderry Gardens. Belfast but I can't seem to find her going out to USA at the moment.

Lillian and Lloyd (US Citizen
New York Passenger ListName: Lillian Lea Born 1862 Liverpool England Aged 64 years
Port of Departure: Londonderry to New York Arriving 26 July 1926 on SS Caedonia.
Daughter Mrs Madge Rae. Warren Villa. Lodge Road. Cleraine. County Derry.
Last residence Hammond. Indiana.
Returning to son Claude Lea. 109 West 9th Street. Michigan City. Indiana
UK Incoming Passenger ListLillian Lea Born about 1862 Aged 63 years + Lloyd
Port of Departure: New York to Glasgow Arrival Date: 26 Jul 1925
Ports of Voyage: Moville on SS Cameronia. Going to Warren Villa. Lodge Road. Cleraine. County Derry.