Tuhia he tohutoro mō tēnei wāhanga - I mahi pono a St. Leger ki a Edward IV i roto i te mahi hōia me te whakahaere mo nga tau. Mo tana mahi pono, i whakawhiwhia e Edward IV a St. Leger me te koha nui o nga whare rangatira e waru i nga tau moata o te 1460. I mawhiti ia i te tika i te tau 1465 i te wa i hopukina ai ia mo te whawhai i te Palace of Westminster ka whakawakia kia tapahia tona ringa. Heoi anō, i whakawātea a Edward IV i a ia. I whawhai a Tomasi mo Edward i nga Pakanga o Barnet
me Tewkesbury. I whai wāhi nui a St Leger ki te whakamutu i te Pakanga o te Rau Tau i tana hainatanga i te Tiriti o Picquigny me Louis XI i te 29 o Akuhata 1475. I whakawhiwhia ki a ia e Louis XI he moni penapena mo te 12,000 karauna ia tau ka tohaina ki a ia ano, ki a Thomas Grey, 1st Marquess of Dorset, Sir John Howard (i muri mai ko te Duke o Norfolk), Sir Thomas Montgomery, me etahi atu o nga rangatira o te whare rangatira. I whakawhiwhia hoki a Thomas hei mema mo te Order of the Bath.