nidan verb (lower class) with 'su' ending (archaic), transitive verb
present; offer; recommend (to a superior)
Archaic humble verb used when the speaker presents or recommends something to a superior. Modern equivalent is 差し上げる (sense 2).
See also: 差し上げる
これは殿に参らす品でございます。
This is an item I humbly present to my lord.
auxiliary verb, nidan verb (lower class) with 'su' ending (archaic), transitive verb
Archaic humble auxiliary attached to the -masu stem of a verb, expressing that the speaker humbly performs the action for a superior. Modern equivalent is 申し上げる (sense 2).
See also: 申し上げる
お待ち参らせまする。
I humbly await you.
Archaic humble form derived from 参る (まいる, humble 'to go/come') + causative/respectful auxiliary す. The exact historical derivation is uncertain, but it served as a humble verb and auxiliary in classical Japanese.