I think you ar right regarding the 2 pics of a missing sector orb weaver (#2 & #3 in this sequence).
It will be extremely diffficult to identify the male spider in #1 & #4 from these photos, but I can tell you that I am 99% sure it is not a false widow. The legs look far too spiney.
Thanks ever so much for your reply , Heres a couple of pictures of the 3rd spider which should have been included in the first post....if you can shed any light on ..I know its difficult from the photos, I can suffer from anaphlactic shock so need to keep abreast on whats in the area ..any help would be much appreciated
This 3rd spider looks like a Metellina species possibly M. segmentata. These spiders are not considered a nuisance, nor to have significant venom, but there have been 2 bite events (with no lasting or serious symptoms described) reported on the forum recently. This appears to be freakish coincidence however and is not typical of M. segmentata.
Although they obviously have the capability, chances of a bite are extremely rare, given the possibility of allergic reaction though, I would advise diligence as I am not in a position to advise as to the risk to yourself.