Thaddeus has a genuinely debated root, with proposals linking it to a word for "heart" or "courage" on one side and to "praise" on the other, with no consensus among scholars. Both readings converge on something admired -- either bravery itself or the recognition that tends to follow it.
There are twelve signs, one of which is constantly ascending: the ascendant signifies the body, and the lord thereof the mind. Let not that sign ascend for your purpose, whose lord is impedited. - William Lilly (1602.-1681.)