Song Shi, vol 482 mentioned he was assasinated only 60 days after taken the throne, at age 34. So that he was probably born in 935 Compiled by Toqto'a (1346). Song Shi 宋史 [History of Song] (in Chinese). Vol. 482.
Song Shi, vol 482: "八月,太祖詔伐繼恩。以內客省使盧懷忠等二十二人將禁兵赴潞州,昭義節度李繼勳為行營前軍都部署,侍衛步軍都指揮使黨進副之,宣徽南院使曹彬為都監;棣州防禦使何繼筠為前鋒部署,懷州防禦使康延沼為都監;建雄軍節度趙讚為汾州路部署,絳州防禦使司超副之,隰州刺史李謙溥為都監。" Compiled by Toqto'a (1346). Song Shi 宋史 [History of Song] (in Chinese). Vol. 482.
Worthy 1975, p. 75. Worthy, Edmund H. (1975). The Founding of Sung China, 950-1000: Integrative Changes in Military and Political Institutions (PhD thesis). OCLC4294233.