Sheet music is at Digital Tradition Mirror.

Info below is from folktrax:

SPENCER THE ROVER - "These words were compos-ed by STR, who travelled through England and most parts of Wales" - feels remorse - returns home to his family - ROUD#1115 - Bs by FORD of Chesterfield 1830s (Palmer Reprint 2001) - SBG 4#414, 5#146, 6#188 & 9#124 - MASON NRCS 1877 p44 Derbysh - KIDSON TT 1891 pp154-6 Yorksh - JFSS 6:21 1918 pp22-4 Frederick Keel: W Tilbury, Thursley, Surrey/ W Wickham, Blackham, Surrey 1907 (m/o)/ Gilchrist: suggests assonance suggests Gaelic origin & note about composers name being given in song (Cf German & French trad) - GRAINGER #144 Samuel Stokes, Retford, Nottinghamsh 1906/ #145 George R Orton, Barrow, Lincolnsh 1906 - WILLIAMS FSUT 1923 p130 James Harris, Southleigh, nr Witney, Oxfordsh/ #327 Daniel Morgan, Braydon Wood, Wiltsh (w/o) - SING 9/1 Feb 1966 Copper - ED&S 30:4 1968 p130 W Tilbury from JFSS 1918 - STUBBS LOM 1970 pp66-7 Mrs Ursula Ridley, West Hoathly, Sussex 1962 - COPPER SESB 1971 pp230-231 - COPPER SSB 1973 p264 - PURSLOW FD 1974 p85 Gardiner: George Blake, Southampton, Hampsh 1906 - KENNEDY FSBI 1975 #331 p717 7v/m Bob & Ron Copper - FOXWORTHY 1976 Janet Blunt coll Oxon 1913 - ANDREWS SOD 1979 Michael Blann Ms, Upper Beeding, Sussex 1v (w/o) - see NOTHING ELSE TO DO -- James & his son, Bob COPPER of Rottingdean rec by Brian George, Peacehaven, Sussex 1/3/51: RPL 16066 - Bob & Ron COPPER (cousins) rec by PK, Peacehaven, Sussex 1955: EFDSS LP 1002 1963/ EFDSS CD-02 1998/ FOLK LEGACY FSB-19/ 029 & 082/ TOPIC TSCD-534 2001 - Bob, John & Jill with Stephen FAUX (fid) 4x30 min progs on Radio 2: Oct 1990/ CASS-60-1013-4 - Jim BARRATT rec by Bob Copper, North Waltham, Hampsh 12/8/55: RPL 21861/ 416 - Shirley COLLINS & Dolly (flute-organ): TOPIC 12-T-170 1967 - Bob, Ron, John & Jill (Bob's son & daughter): LEADER LEA-4046 1971 (boxed set) - MUCKRAM WAKES: LEADER LER-2085 1973 (from Mason)

There're 11 editions at Bodleian Library Broadside Ballads: Spencer the Rover.